Split Rock Lighthouse opened in the summer of 1910 to guide bulk ore ships sailing near Lake Superior's rocky coast. By 1940, its picturesque North Shore setting had made it one of the most visited lighthouses in the United States.

In 1932, singer Bing Crosby had a major hit with his recording of E. Y. Harburg and Jay Gorney's song "Brother, Can You Spare a Dime?" Its lyrics could have been the story of Wilbur B. Foshay: "Once I built a tower up to the sun/ brick and rivet and lime/ Once I built a tower, now it's done/ Brother, can you spare a dime?" Foshay built a fortune, built a tower in Minneapolis—and then lost it all in the stock market crash of 1929.